Ashley and Kyer Sabo play pretend tea party with their two daughters 1-year-old Lucy and 4-year-old Anna on Thursday. Both girls are regular patients at A.I. duPont Hospital for Children.

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The letters - all 21 of them - arrived in the mailbox of Kyer and Ashley Sabo on the same day, Feb. 10.

All were from UnitedHealthcare, and all carried the same disturbing message: They would need to find new doctors, specialists and other medical professionals to care for their little girls - Anna, 4, and Lucy, 1 - by April 1, the day United's contract with Alfred I. duPont Hospital for Children/Nemours expires.

It was their first clue that such a breakup was under consideration, let alone likely and imminent. Each letter named a specific professional Anna and Lucy had seen at some point who no ...